Barn Owl The barn owl is sometimes referred to the ghost owl for its silent gliding and so.  It has a length of 14''-21''. And has a wingspan of 40.5''-45''. The barn owl has long legs and a long beak. the barn owls eyes are a sort of mahogany color.  It has small eyes for it big size. The barn owl is not often seen in the day it's strictly nocturnal. The barn owl has quite better hearing than almost any owl. The barn owl usually eats mice, rats, large insects, reptiles, amphibians and sometimes songbirds. The barn owl has two main enemies the great horned owl and the prairie falcon. But the owls greatest threat are us, the humans. The barn owl lives in old buildings, silos, bridges and windmills. The barn owl will usually live up to 8 years.